<template>
	<view class="uni-calendar">
		<view v-if="!insert && show" class="uni-calendar__mask" :class="{ 'uni-calendar--mask-show': aniMaskShow }" @click="clean"></view>
		<view v-if="insert || show" class="uni-calendar__content" :class="{ 'uni-calendar--fixed': !insert, 'uni-calendar--ani-show': aniMaskShow }">
			<view v-if="!insert" class="uni-calendar__header uni-calendar--fixed-top">
				<view class="uni-calendar__header-btn-box" @click="close"><text class="uni-calendar__header-text uni-calendar--fixed-width">取消</text></view>
				<view class="uni-calendar__header-btn-box" @click="confirm"><text class="uni-calendar__header-text uni-calendar--fixed-width">确定</text></view>
			</view>
			<view class="uni-calendar__header">
				<view class="uni-calendar__header-btn-box" @click.stop="pre">
					<!-- <view class="uni-calendar__header-btn uni-calendar--left"></view> -->
					<text class="iconfont iconback_light"></text>
				</view>
				<picker mode="date" :value="date" fields="month" @change="bindDateChange">
					<text class="uni-calendar__header-text">{{ (nowDate.year || '') + '年' + (nowDate.month || '') + '月' }}</text>
				</picker>
				<view class="uni-calendar__header-btn-box" @click.stop="next">
					<!-- <view class="uni-calendar__header-btn uni-calendar--right"></view> -->
					<text class="iconfont iconright"></text>
				</view>
			</view>
			<view class="uni-calendar__box">
				<view v-if="showMonth" class="uni-calendar__box-bg">
					<text class="uni-calendar__box-bg-text">{{ nowDate.month }}</text>
				</view>
				<view class="uni-calendar__weeks">
					<view class="uni-calendar__weeks-day"><text class="uni-calendar__weeks-day-text">日</text></view>
					<view class="uni-calendar__weeks-day"><text class="uni-calendar__weeks-day-text">一</text></view>
					<view class="uni-calendar__weeks-day"><text class="uni-calendar__weeks-day-text">二</text></view>
					<view class="uni-calendar__weeks-day"><text class="uni-calendar__weeks-day-text">三</text></view>
					<view class="uni-calendar__weeks-day"><text class="uni-calendar__weeks-day-text">四</text></view>
					<view class="uni-calendar__weeks-day"><text class="uni-calendar__weeks-day-text">五</text></view>
					<view class="uni-calendar__weeks-day"><text class="uni-calendar__weeks-day-text">六</text></view>
				</view>
				<view class="uni-calendar__weeks" v-for="(item, weekIndex) in weeks" :key="weekIndex">
					<view class="uni-calendar__weeks-item" v-for="(weeks, weeksIndex) in item" :key="weeksIndex">
						<uni-calendar-item :weeks="weeks" :calendar="calendar" :selected="selected" :lunar="lunar" @change="choiceDate"></uni-calendar-item>
					</view>
				</view>
			</view>
		</view>
	</view>
</template>

<script>
import Calendar from './util.js';
import uniCalendarItem from './uni-calendar-item.vue';
/**
 * Calendar 日历
 * @description 日历组件可以查看日期，选择任意范围内的日期，打点操作。常用场景如：酒店日期预订、火车机票选择购买日期、上下班打卡等
 * @tutorial https://ext.dcloud.net.cn/plugin?id=56
 * @property {String} date 自定义当前时间，默认为今天
 * @property {Boolean} lunar 显示农历
 * @property {String} startDate 日期选择范围-开始日期
 * @property {String} endDate 日期选择范围-结束日期
 * @property {Boolean} range 范围选择
 * @property {Boolean} insert = [true|false] 插入模式,默认为false
 * 	@value true 弹窗模式
 * 	@value false 插入模式
 * @property {Boolean} clearDate = [true|false] 弹窗模式是否清空上次选择内容
 * @property {Array} selected 打点，期待格式[{date: '2019-06-27', info: '签到', data: { custom: '自定义信息', name: '自定义消息头',xxx:xxx... }}]
 * @property {Boolean} showMonth 是否选择月份为背景
 * @event {Function} change 日期改变，`insert :ture` 时生效
 * @event {Function} confirm 确认选择`insert :false` 时生效
 * @event {Function} monthSwitch 切换月份时触发
 * @example <uni-calendar :insert="true":lunar="true" :start-date="'2019-3-2'":end-date="'2019-5-20'"@change="change" />
 */
export default {
	components: {
		uniCalendarItem
	},
	props: {
		date: {
			type: String,
			default: ''
		},
		selected: {
			type: Array,
			default() {
				return [];
			}
		},
		lunar: {
			type: Boolean,
			default: false
		},
		startDate: {
			type: String,
			default: ''
		},
		endDate: {
			type: String,
			default: ''
		},
		range: {
			type: Boolean,
			default: false
		},
		insert: {
			type: Boolean,
			default: true
		},
		showMonth: {
			type: Boolean,
			default: true
		},
		clearDate: {
			type: Boolean,
			default: true
		}
	},
	data() {
		return {
			show: false,
			weeks: [],
			calendar: {},
			nowDate: '',
			aniMaskShow: false
		};
	},
	watch: {
		date(newVal) {
			this.cale.setDate(newVal);
			this.init(this.cale.selectDate.fullDate);
		},
		startDate(val) {
			this.cale.resetSatrtDate(val);
		},
		endDate(val) {
			this.cale.resetEndDate(val);
		},
		selected(newVal) {
			this.cale.setSelectInfo(this.nowDate.fullDate, newVal);
			this.weeks = this.cale.weeks;
		}
	},
	created() {
		// 获取日历方法实例
		this.cale = new Calendar({
			// date: new Date(),
			selected: this.selected,
			startDate: this.startDate,
			endDate: this.endDate,
			range: this.range
		});
		// 选中某一天
		this.cale.setDate(this.date);
		this.init(this.cale.selectDate.fullDate);
		// this.setDay
	},
	methods: {
		// 取消穿透
		clean() {},
		bindDateChange(e) {
			const value = e.detail.value + '-1';
			this.cale.setDate(value);
			this.init(value);
		},
		/**
		 * 初始化日期显示
		 * @param {Object} date
		 */
		init(date) {
			this.weeks = this.cale.weeks;
			this.nowDate = this.calendar = this.cale.getInfo(date);
		},
		/**
		 * 打开日历弹窗
		 */
		open() {
			// 弹窗模式并且清理数据
			if (this.clearDate && !this.insert) {
				this.cale.cleanMultipleStatus();
				this.cale.setDate(this.date);
				this.init(this.cale.selectDate.fullDate);
			}
			this.show = true;
			this.$nextTick(() => {
				setTimeout(() => {
					this.aniMaskShow = true;
				}, 50);
			});
		},
		/**
		 * 关闭日历弹窗
		 */
		close() {
			this.aniMaskShow = false;
			this.$nextTick(() => {
				setTimeout(() => {
					this.show = false;
					this.$emit('close');
				}, 300);
			});
		},
		/**
		 * 确认按钮
		 */
		confirm() {
			this.setEmit('confirm');
			this.close();
		},
		/**
		 * 变化触发
		 */
		change() {
			if (!this.insert) return;
			this.setEmit('change');
		},
		/**
		 * 选择月份触发
		 */
		monthSwitch() {
			let { year, month } = this.nowDate;
			this.$emit('monthSwitch', {
				year,
				month: Number(month)
			});
		},
		/**
		 * 派发事件
		 * @param {Object} name
		 */
		setEmit(name) {
			let { year, month, date, fullDate, lunar, extraInfo } = this.calendar;
			this.$emit(name, {
				range: this.cale.multipleStatus,
				year,
				month,
				date,
				fulldate: fullDate,
				lunar,
				extraInfo: extraInfo || {}
			});
		},
		/**
		 * 选择天触发
		 * @param {Object} weeks
		 */
		choiceDate(weeks) {
			if (weeks.disable) return;
			this.calendar = weeks;
			// 设置多选
			this.cale.setMultiple(this.calendar.fullDate);
			this.weeks = this.cale.weeks;
			this.change();
		},
		/**
		 * 回到今天
		 */
		backtoday() {
			let date = this.cale.getDate(new Date()).fullDate;
			this.cale.setDate(date);
			this.init(date);
			this.change();
		},
		/**
		 * 上个月
		 */
		pre() {
			const preDate = this.cale.getDate(this.nowDate.fullDate, -1, 'month').fullDate;
			this.setDate(preDate);
			this.monthSwitch();
		},
		/**
		 * 下个月
		 */
		next() {
			const nextDate = this.cale.getDate(this.nowDate.fullDate, +1, 'month').fullDate;
			this.setDate(nextDate);
			this.monthSwitch();
		},
		/**
		 * 设置日期
		 * @param {Object} date
		 */
		setDate(date) {
			this.cale.setDate(date);
			this.weeks = this.cale.weeks;
			this.nowDate = this.cale.getInfo(date);
		}
	}
};
</script>

<style lang="scss" scoped>
.uni-calendar {
	/* #ifndef APP-NVUE */
	display: flex;
	/* #endif */
	flex-direction: column;
}

.uni-calendar__mask {
	position: fixed;
	bottom: 0;
	top: 0;
	left: 0;
	right: 0;
	background-color: $uni-bg-color-mask;
	transition-property: opacity;
	transition-duration: 0.3s;
	opacity: 0;
	/* #ifndef APP-NVUE */
	z-index: 99;
	/* #endif */
}

.uni-calendar--mask-show {
	opacity: 1;
}

.uni-calendar--fixed {
	position: fixed;
	bottom: 0;
	left: 0;
	right: 0;
	transition-property: transform;
	transition-duration: 0.3s;
	transform: translateY(460px);
	/* #ifndef APP-NVUE */
	z-index: 99;
	/* #endif */
}

.uni-calendar--ani-show {
	transform: translateY(0);
}

.uni-calendar__content {
	background: linear-gradient(180deg, rgba(247, 0, 66, 1), rgba(254, 147, 76, 1));
	border-bottom-left-radius: 24rpx;
	border-bottom-right-radius: 24rpx;
}

.uni-calendar__header {
	position: relative;
	/* #ifndef APP-NVUE */
	display: flex;
	/* #endif */
	flex-direction: row;
	justify-content: space-between;
	align-items: center;
	height: 56rpx;
	width: 657rpx;
	margin: 0 auto;
	background-color: #fa556a;
	border-radius: 28px;
}

.uni-calendar--fixed-top {
	/* #ifndef APP-NVUE */
	display: flex;
	/* #endif */
	flex-direction: row;
	justify-content: space-between;
	border-top-color: $uni-border-color;
	border-top-style: solid;
	border-top-width: 1px;
}

.uni-calendar--fixed-width {
	width: 50px;
	// padding: 0 15px;
}

.uni-calendar__backtoday {
	position: absolute;
	right: 0;
	top: 25rpx;
	padding: 0 5px;
	padding-left: 10px;
	height: 25px;
	line-height: 25px;
	font-size: 12px;
	border-top-left-radius: 25px;
	border-bottom-left-radius: 25px;
	color: $uni-text-color;
	background-color: $uni-bg-color-hover;
}

.uni-calendar__header-text {
	text-align: center;
	width: 100px;
	font-size: 26rpx;
	color: #fff;
}

.uni-calendar__header-btn-box {
	/* #ifndef APP-NVUE */
	display: flex;
	/* #endif */
	flex-direction: row;
	align-items: center;
	justify-content: center;
	width: 50px;
	height: 50px;
	color: #fff !important;
}

.uni-calendar__header-btn {
	width: 10px;
	height: 10px;
	border-left-color: $uni-text-color-placeholder;
	border-left-style: solid;
	border-left-width: 2px;
	border-top-color: $uni-color-subtitle;
	border-top-style: solid;
	border-top-width: 2px;
}

.uni-calendar--left {
	transform: rotate(-45deg);
}

.uni-calendar--right {
	transform: rotate(135deg);
}

.uni-calendar__weeks {
	position: relative;
	/* #ifndef APP-NVUE */
	display: flex;
	/* #endif */
	flex-direction: row;
}

.uni-calendar__weeks-item {
	flex: 1;
}

.uni-calendar__weeks-day {
	flex: 1;
	/* #ifndef APP-NVUE */
	display: flex;
	/* #endif */
	flex-direction: column;
	justify-content: center;
	align-items: center;
	height: 45px;
	color: #fff;
	font-size: 24rpx;
}

.uni-calendar__weeks-day-text {
	font-size: 14px;
}

.uni-calendar__box {
	position: relative;
}

.uni-calendar__box-bg {
	/* #ifndef APP-NVUE */
	display: flex;
	/* #endif */
	justify-content: center;
	align-items: center;
	position: absolute;
	top: 0;
	left: 0;
	right: 0;
	bottom: 0;
}

.uni-calendar__box-bg-text {
	font-size: 200px;
	font-weight: bold;
	color: $uni-text-color-grey;
	opacity: 0.1;
	text-align: center;
	/* #ifndef APP-NVUE */
	line-height: 1;
	/* #endif */
}
</style>
